Improvement in wringing-machines



E. HUMMER.

Wri nging-Machines. No. 134,131. Patented Dec.24, 1872.

WITNESSES:

INVENTOR:

A M PHUTO-UTHDGI'IA FHIC C(AMYMSEMNEIS PROCESS) UNITED STATES PATENTOFFICE.

EDYVARD DUMMER, OF NEWBURYPORT, MASSACHUSETTS.

IMPROVEMENT IN WRlNGING-MACHINES.

Specification forming part of Letters Patent No. 134,131, dated December24, 1872.

To all whom it may concern:

Be it known that I, EDWARD DUMMER, of Newburyport,in the county of Essexand State of Massachusetts, have invented certain Improvements inWringing-Machines, of which the following is a specification:

The first part of my invention relates to the application of myinvention for reducing friction on bearings (and for which LettersPatent were granted September 5,1871) to a clotheswringer the object ofthis part of my invention being to reduce the power necessary to operatesaid wringers. The second part of my invention relates to the moving aroll or pulley in or out of line with the other rolls or pulleys, theobject of this part of my invention being, by widening the distancebetween the rolls or narrowing said distance, to graduate the pressure,or prevent the rolls remaining under pressure the one upon the otherwhen not in use. The third part of my invention relates to the manner offastening the wringingmachine upon the tub or other support; the objectof this part of my invention being to provide a simple device easilyadjusted to all forms to which the machine may be fastened.

Figure 1 is a perspective view of a clotheswringer embodying myinvention. Fig. 2 is an elevation, showing the end of the machine at theright hand in Fig. 1, (the crank being left 011,) having the parts ofwhich it is composed separated the better to show the relation of saidparts. Fig. 3 is a perspective view of one of the slides with itsthumb-screw for moving in and out of the shaft of the lower roll. Fig. 4is one of the legs or clamps seen in position in Figs. 1 and 2.

A is the board, a piece being broken out in the drawing the better toshow the construction of the machine, over which the clothes pass beforegoing between the rolls, and which assists in holding the ends of themachine in position. B C are the two parts of which the right end of theframe of the machine is composed, and B O are the corresponding parts ofthe other end. D is the board which throws back the water and assists,as a part of the frame, in holding the ends in position. E F are therolls between which the articles to be pressed pass. G G are the legs orclamps, which are made so that, being simply thrust in the holes boredupward in the lower ends of O 0, they may be turned about the axis oftheir length or swung toward the lower parts of B B. Said legs or clampshave holes in them for the passage of thumb-screws. Said holes are socountersunk upon the sides opposite the thumb-pieces of the screws thatthe legs may be turned and swung, as aforesaid, and, under pressure ofthe thumb-screws with the lower parts of B B, clamp the machine toa-variety of forms. At H is shown one of the thumb-screws in positionfor operating the leg or clamp. Said thumb-screws screw into the lowerpart of B B, either with the use of nut, as in drawing, or without. J JK K are bolts and screws, by which the two parts of each end of frameare held firmly together. L is a shaft, its object being to hold inposition the pulleys or rollers, one pulley being shown at M, therebeing a similar one at the other end of said shaft. N is a pulley orroller on the same shaft with roll F, this shaft having'a similar one atthe other end. 0 is a pulley or roller on the same shaft with roll E,this shaft having a similar one at the other. end. The pulley orrollerObears and moves upon and with the pulley or roller M. Theoperation at the other end of the machine is similar. Instead of usingthe long shaft L, the pulley at the other end might be held in position,and the pulley M, by short bearings, on each side of said pulleys. P isa ring which bears upon and moves with the pulleys M- N. The proportionand oflice of this ring and the pulleys M'N 0, operating with the rollsE F, are such that while there may be pressure on the rolls E F, the oneagainst the other, or against the substance passed between said rolls,the shafts of said rolls are relieved of much of the pressure andconsequent rubbing or sliding friction in the ordinary bearings, therebeing substituted a rolling for said sliding friction. 1 is a ring atthe other end of the machine, operating in a similar manner as 1?. Onlyone system of ring with pulleys or rollers may be used. Q is a slidehaving in it a bearing for the shaft of the roll E, and working in aslot or mortise cut in B and O. Said slide also forms a not for thethumb-screw B. B is a thumb-screw operating a' similar slide. Bymanipulating the thumb-screw the shaft of the roll E is 2 rennet drawninto or let out of line with the shaft of roll F and of pulley or rollerM, so that the pressure of the rolls E F, the one against the other, oragainst the substances vpassed between, may be graduated or destroyed.The crank Sis shown only in Fig. 1.

I claim as my invention- 1. The combination of the ring P, the pulleys MN O, and rolls E F, substantially as and for the purpose hereinbeforeset forth.

2. The combination of the slide Q, frame B O, and pulleys M N O,substantially as and for the purpose hereinbefore set forth.

3. The clamp or leg G, countersunk at H, and thrust in the part of frame0, or similarly confined, so as to turn about the axis of its length,substantially as and for the purpose hereinbefore set forth.

EDWARD DUMMER.

Witnesses:

ALBERT S. KENT, LEONARD N. KENT.

